Escalations are more or less the last things that are still missing in NConf. They are definitely on the roadmap, but I cannot tell you in which release exactly we are going to implement them. So far we have not gotten a lot of requests from the community, so it's definitely not very high priority.

@developers: Yes, please! Please consider adding this feature even if you think that there is low feedback coming from the community. This will be a very good feature for drawing more attention to Nconf. I'd like to see the community to broaden.